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trane 2 stage condenser wiring

I'm trying to help out a contractor friend of mine. he is working on a Trane TTS748A100AO 2 stage ac and the wiring diagram is missing. The last contractor quit on the job and left it not hooked up. the wires are red/black, blue, black, red, and green. I have put in quite a few Trane units but I haven't seen this. I called my Trane dealer and the are bus today and not normally helpful. I was hoping someone here could lend some knowledge so I can help out a friend.

thanks for the email. My Trane dealer called back and said it is a various peed obsolete unit. it can't be combined with any furnace today. they don't make any parts or accessories for it. He said it hooks not a panel that we can't get also.
Thanks for the help.

I think my favorite "unique" feature of those units was the cooling for the compressor drive.
No phase change involved, but the liquid refrigerant was routed through a heat exchanger connected to the back of the compressor drive to liquid cool the drive.